Pregnane- and furostane-type oligoglycosides from the seeds of Allium tuberosum
Pregnane- and furostane-type oligoglycosides from the seeds of Allium tuberosum
复制标题
DOI：
10.1248/cpb.52.142
复制
发表时间：
2004-01-01
影响因子：
1.7
通讯作者：
Nohara, T
中科院分区：
文献类型：
--
作者：
Ikeda, T;Tsumagari, H;Nohara, T
从韭菜种子中分离得到两个呋甾烷型甾体寡苷（1，2）和一个新的孕烷型寡苷（3）。通过光谱分析，确定了3个新的低聚糖苷（1-3）的结构分别为：26-O-β-D-吡喃葡萄糖基-（25 R）-3 β 22 xi，26-三羟基-5 α-呋喃糖苷3-O-β-chacotrioside，26-O-β-D-吡喃葡萄糖基-（25 S）-3 β，5 β，6 α，22 xi，26-五羟基-5 β-呋喃糖苷3-O-α-L-吡喃鼠李糖基-（1->4）-β-D-吡喃葡萄糖苷，和3-O-α-L-吡喃葡萄糖基-（1->4）-β-D-吡喃葡萄糖基3 β，5 β，6 α，16 β-四羟基孕烷16-（5-O-β-D-吡喃葡萄糖基-4（S）-甲基-5-羟基戊酸）酯。
Two furostane-type steroidal oligoglycosides (1, 2), together with a new pregnane-type oligoglycoside (3), were obtained from the seeds of Allium tuberosum ROTTLER. On the basis of spectroscopic analysis, the structures of three new oligoglycosides (1-3) were elucidated as 26-O-beta-D-glucopyranosyl-(25R)-3beta22xi,26-trihydroxyl-5alpha-furostane 3-O-beta-chacotrioside, 26-O-beta-D-glucopyranosyl-(25S)-3beta,5beta,6alpha,22xi,26-pentahydroxyl-5beta-furostane 3-O-alpha-L-rhamnopyranosyl-(1-->4)-beta-D-glucopyranoside, and 3-O-alpha-L-rhamnopyranosyl-(1-->4)-beta-D-glucopyranosyl 3beta,5beta,6alpha,16beta-tetrahydroxypregnane 16-(5-O-beta-D-glucopyranoyl-4(S)-methyl-5-hydroxypentanoic acid) ester, respectively.